USA TODAY

Austin Harrouff’s Youtube bio.

Haurrouff is accused of brutally stabbing John Stevens III, 59, and Michelle Mishcon, 53, and biting the Stevens’ face in Tequesta near his hometown of Jupiter Monday night.

Read about the videos he was posting here.

The first YouTube video went live 10 years ago today. Here’s a gallery of GIFs from some of the most-watched YouTube videos since that historic day.

Stylists transform model Sabrina Sarajy's hair and makeup to popular styles from each decade in a time-lapsed video produced by media company Cut.com.

"We wanted to do something that was unexpected," Mike Gaston, the video's creative director, said. "And we wanted to do something that would explore a country where the fashion was so obviously influenced by the politics."

Here's some background on what was happening in Iran that influenced these changes.

R&B singer Luke James, who opened for Beyonce on recent tours, stopped by our Studio A for a three-song set and a chat. About Bey, he said: "She's my big sis and she looks out for me." http://usat.ly/1eJb25S Here, he performs "I.O.U.," "Make Love To Me," and "I Want You."